Home / 20,971,255.86-31,416,582.82-12,860,580.46

Finding the Fourth Proportional to 20,971,255.86, 31,416,582.82 and 12,860,580.46

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Solution

The fourth proportional to 20,971,255.86, 31,416,582.82 and 12,860,580.46 is: 19,266,156.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971,255.86 : 31,416,582.82 = 12,860,580.46 : x
  2. Step 2: Convert to fraction form
    20,971,255.86/31,416,582.82 = 12,860,580.46/x
  3. Step 3: Cross multiply
    20,971,255.86x = 31,416,582.82 × 12,860,580.46
  4. Step 4: Simplify right side
    20,971,255.86x = 404,035,491,134,863.75
  5. Step 5: Solve for x
    x = 404,035,491,134,863.75/20,971,255.86
  6. Step 6: Final answer
    x = 19,266,156.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.